Speaker



FIG. 1 is a perspective view of a speaker showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof; and

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a perspective view of another embodiment of a speaker showing my new design; and,

FIG. 6 is a front elevational view thereof.

The portions indicated in broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a speaker, as shown and described. 